System:preset, *rst, system:cpon and power on, Route:rmodule:bank:preset – Agilent Technologies L4400 User Manual

Page 165

L4445A Microwave Switch/Attenuator Driver

L4400 User’s Guide

153

SYSTem:PRESet, *RST, SYSTem:CPON and Power On

These actions drive the channels to their defined

DEFault

state (using the

configuration stored on the remote module) and force the system to
recognize new topologies (caused by power or connectivity changes). These
actions set the defaults shown in the table on

page 152

. Two parameters

are controllable to ensure safety of operation in the system; the default
state for channel closure and the default state for drive enabled.

The default channel state (open or closed) for each channel can be set
using either of the following commands.

ROUTe:CHANnel:DRIVe:CLOSe:DEFault



ROUTe:CHANnel:DRIVe:OPEN:DEFault



If a channel is configured for a single drive in pulsed mode,

OPEN

operations are undefined. When these channels are configured to a
default state of

OPEN

, no action is taken on these channels.

The drive state can be set as a default using the

ROUTe:RMODule:DRIVe:SOURce:BOOT

command. This command allows you

to specify whether the drive current, when present, should be applied to
the switches or not. You can set

OFF

INTernal

, and

EXTernal

for the

default.

The

*RST

command forces a re- evaluation of all connected remote

modules, followed by setting all channels to their default states. This is
very similar in operation to what occurs at power- up.

ROUTe:RMODule:BANK:PRESet

This command sets a bank to default values that vary according to which
distribution board is attached. The following table shows the default states
set by

ROUTe:RMODule:BANK:PRESet.



N O T E

Y1150A

Y1151A

Y1152A

Y1153A

Y1154A

Y1155A

ROUT:CHAN:DRIV:PULS:MODE

ROUT:CHAN:DRIV:PULS:WIDT

15 ms

ROUT:CHAN:PAIR:MODE

OFF

ROUT:CHAN:DRIV:TIME:REC

0 s

ROUT:CHAN:DRIV:TIME:SETT

0 s

ROUT:CHAN:VER:ENAB

OFF

ROUT:CHAN:VER:POL

NORM

INV

NORM

ROUT:RMOD:BANK:DRIV:MODE

OCOL